Cornerpiece structure



Aug. 17, 1948.

w. M. KRANTZ 2,447,346 v 7 CORNER PIECE'STRUCTURE x Filed Aug. 1, 194s A7' ORA/Ev,

Patented Aug. 17, 1948 CORNERPIECE STRUCTURE Walter M. Krantz,Youngstown, Ohio, assignor,

by direct and mesne assignments, to Ace Storm Window Company,Youngstown, Ohio, a cor-;

poration of Ohio Application August 1, 1945, Serial 3 Claims.((31.189-36) This-invention relates toa corner piece structure and moreparticularly to a corner piece structure suitable for use in theformation of metallic frames such as employed in the formation of stormwindows.

The principal object of the invention is the provision of a corner piecestructure suitable for joining metallic structures to one another toform a built up metallic frame as, for example, of a storm window.

A further object of the invention is the provision of a corner piecestructure capable of aligning pieces of framing material being attachedto one another.

A still further object of the invention is the provision of a cornerpiece structure utilizing a single channeled corner piece for affixincut sections of a framing material to one another.

The corner structure shown and described herein has been devised tofacilitate the rapid and inexpensive formation of metallic framestructures such as may be advantageously employed in the formation ofmetallic storm sash. It is well known that storm sash are commonlycustom built for various sized window openings as found in dwellings andother buildings, and that in forming a storm sash of metal framingpieces it is essential that a simple and efficient corner structure beutilized. The present disclosure relates to a corner piece structurewhich may be used in combination with appropriately cut sections ofsuitably formed framing material.

With the foregoing and other objects in view which will appear as thedescription proceeds, the

invention resides in the combination and arrangement of parts and in thedetails of construction hereinafter described and claimed, it beingunderstood that changes in the precise embodiment of the inventionherein disclosed can be made within the scope of what is claimed withoutdeparting from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a top plan view with parts broken away and parts in crosssection illustrating the corner piece structure.

Figure 2 is a cross sectional elevation taken on line 2-2 of Figure 1.

Figure 3 is a perspective elevation of the corner piece employed in thestructure shown in Figures 1 and 2.

By referring to the drawings and Figures 1 and 2 in particular in willbe seen that a pair of abutting end sections of a metallic shape l0 havebeen joined to one another by means of a corner 7 I 2 1 piece ll whichis, as may be seen by referring "to Figure 3; an L-shaped die cast pieceprovided with a T-shaped channel. l2 formed-therein. By again referringto Figures 1 and 2 it will be observed that the corner piece I l isadapted for use in uniting appropriately cut end sections of the metalshape lo, the same consisting of a body having a surface flange l3formed by a pair of oppositely disposed axially extending flanges I4 andhaving a centrally disposed axially extending rib I5, the uppermost endof which is provided with a T-head shape consisting of projections I6and IBA, respectively.

By referring to Figure 2 of the drawings is will be seen that dovetailedchannels I! and "A are formed continuously in either side of theupstanding rib 15. The corner piece II, as disclosed in detail in Figure3 and heretofore described as havin a T-shaped channel formed therein,will be seen to be of a size and shape enabling cut end sections of theshape ID to be joined thereto by the insertion of the end sections ofthe upstanding rib I5 into the T-shaped channel I2 of the corner piece II. It will be observed that the side sections of the corner piece Hforming the T-shaped channel l2 are shaped to register with thedovetailed channels I! and HA formed continuously on the sides of theupstanding rib 15 of the metal shape Ill. The side sections of thecorner piece II are formed with oppositely disposed facing dovetailshaped projections l8 which, in effect, form the T-shaped channel It. Itwill also be observed that this formation results in a pair of angularribs along the bottom of the corner piece ll. When two sections of metalframing shape, such as indicated by the numeral ill in Figure 1, are cutat a forty-five degree angle, as indicated by the numeral 19 in Figure1, and placed into end engagement with one another With the upstandingribs I5 thereof in engagement with the T -shaped channel I2 of thecorner piece II, a resulting corner piece structure is obtained which isneat in appearance and extremely effective in holding the framingmembers 10 in assembled position.

It will thus be seen that a simple and eflicient corner piece structurehas been disclosed which will enable pairs of suitable framing membersto be joined to form a frame of the desired shape and size for theformation of a storm window frame. It will also be seen that the frameformed through the use of the corner piece structure is extremely rigidand entirely capable of retaining its shape without warping ormisalignment as the dual action of the corner piece II is engaging theupstanding rib 12 of the framing member applies tension along both sidesof the upstandin rib as well as on the uppermost surface thereof and atthe same time engages on a substantial area the back of the surfaceflange I3. The resulting corner structure i thereby tightly formed andcapable of retaining its framed shape indefinitely.

Having thus described my invention, what I claim is:

1. A corner piece structure comprising in combination a shape having anaxially extending rib, the said rib having undercut channels formed oneither side thereof and an L-shaped corner piece having a channel formedtherein registering with the said axially extending rib of the saidshape.

2. A corner piece structure comprising in cornbination a shape having anaxially extending rib, the said rib having dovetailed channels formedcontinuously on either side thereof and an L- shaped corner piece havinga channel formed therein registering with the said axially extendiingrib. of the said shape.

3. A corner piece structure comprising in combination a shape having anaxially extending rib and an unbroken surface flange, the said rib beingT-shaped in cross section, a pair of axially extending V shaped groovesformed in the said flange adjacent the base of the said rib, and anL-shaped corner piece having a channel formed therein registering withthe said axially extending rib of the said shape and having sharpdepending ridges registering with the said axially extending V shapedgrooves.

WALTER M. KRANTZ.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS a Number Name Date 281,964 Brent July 24, 18832,395,613 Krantz Feb. 26, 1946

